Mine still has the large round red/white dome light And thinking that might be better in back cargo area, and maybe I'll just swap the two as the rear one seems to be as you describe, very small LED. Headliner swap is a thought, but I figured shipping costs would be outrageous, so.... I think I will end up with a filler panel of some sort, with a HomeLink (garage door opener, flanked by a pair of task lights. And you might be correct as to what was there since I have not found a ton of wiring up top except four (4) antennae's!!! Mine had no extra holes in the roof, which I thought was a plus. HMmmm, if those back tailgate holes were lights, would be nice to just get a set of those and plug them back in, no fuss no muss. There are also a set of housings flanking the 3rd high mount brake light, which I figured were strobes as well. Of course those were also removed, but seems like there is some extra wiring in lift gate, so.... Thinking the high housings might be neat for a couple of turn signal arrows (like you find in side mirrors). Mine did have the separation panel between the rear cargo and back seat, but that came out pretty easily, along with dozens of wires running under the console and floor spine. I'll have to look at my lights to see if there are extra holes or not, but having trouble getting your link to open. I guess part of the mystery/fun of one of these PIU's is figuring out what they once were and what hidden surprises they still hold. In my case the company that took it out of service did what I'd consider a poor job, as the wiring was just cut and left in place with wires still connected to power (a couple of 40 amp wires, just left under the floor liner Lucky I found that early before much driving. THANKs for the info.